Valve.



Iio. $41,641.

7 UNITED STATES Patentecl October 20, 190d.

PATENT OFFICE.

JOHN ERWOOD, OF CHICAGO, ILLINOIS, ASSIGNOR' OF ONE-FOURTH TO ROBERT H.WALOI-I, OF CHICAGO, ILLINOIS.

. VA LV E.

SPECIFICATION forming part of Letters Patent N 0. 741,641, dated October20, 19 03.

' Application filed February 20, 1903. Serial No. 144,247. (No model.)

To aZZ whom it may concern:

oago, in the State of Illinois, have invented certain new and usefulImprovements in Valves, of which the following is a specification.

This invention relates to hinged slidevalves for air, gas, steam, orwater pipes, designed to operate as a controlling-valve or full-wayvalve; and the objects are, first, to provide levers adapted to engagethe valve and operating in connection therewith in its function as acontrolling-valve and to be automatically disengaged therefrom in itsfunction as a full-way valve, and, second, to provide means for floodingthe valve to make it air-tight when used 'for' air, 850. I have attainedthese objects by the means illustrated in the accompanying drawings, inWhich- Figure 1 is a side elevation showing in fragment a conduit-pipewith a valve-chamber and valve containing my invention. Fig. 2 is avertical central longitudinal section of the same. Fig. 3 is ahorizontal section at 3 3 of Fig. 2.

In the drawings, A is the conduit-pipe; A, a section thereofconstituting the valvechamber having a hood or bonnet A B is a circularslide-valve b, the valve-seat; B, a nut provided with an extension inthe plane of the valve; 1 a hinge or pivotal connection of the rear edgeof the valve with the nut extension; 0, a threaded rod passing throughthe nut and through a stuffing-box at c.

D is a stop to the inward movement of the nut; E, guides along oppositeedges of the valve; F, a spring-pressed rock-shaft journaled slightlyabove the plane of the valve in the walls of the valve-chamber, with oneend preferably projecting out through the same, where it is providedwith a stuffing-box c; E, a lever keyed at one end to the end of therock-shaft projecting outside of the valvechamber; E a spring with oneend attached to the free end of said lever and the other end attached toa lug E on the exterior of the valvechamber. The rock-shaft-is providedwith two levers f, keyed thereto at points in plane with opposite sidesof the valveseat and parallel ployed to keepthe valve in place betweenthelevers if the hinge at I) should not give sufficient lateral supportfor this purpose.

G is a small tube passed through an openin g in the valve-chamber andfitted air-tight' therein for admitting water into the valvechamber overthe'valve in order to supplement its connection or contactwith thevalveseat to make it air-tight. G is a float-valve in connection withthe inner end of said tube within the valve-chamber for automaticallyregulating or controlling the admission of water into the valve-chamber.A glass gage g is provided in connection with the valve chamber forshowing the height of the water therein; c 7

r H is a handle for regulating the screw-rod O and causing the nuttotravel thereon for sliding the valve onto or off of its valve-seat. Asthe valve slides off of its seat and into the and they are automaticallydisengaged therefrom, and as it slides back on the seat itpasses underthe levers and they are automatically engaged therewith to hold itpressed upon the seat. When the valve is withdrawn, the levers areforced against the'valve-seat at opposite sides of the passage-way anddo not'obstruct the same. In this posit-ion the relation of the leversand valve is such that the levers can easily take'their working positionwith the valve when it is slid back upon its seat.

. The means for holding the levers pressed toward the valve or its seatneed not necessarily be situatedoutside the valve-chamber.

What is claimed is- 1. The combination with the valve-chamber and itshood 01. a hinged slide-valve, a

hood it is withdrawn from under the levers rod in connection with meansfor sliding the valve,a rockshaft j ournaled within the valvechamber ina plane above the valve-hinge, levers keyed to the rock-shaft within thevalve-chamber and arranged at opposite sides of the valve-seat, andmeans in connection with the rock-shaft for holding the levers pressedupon or toward the valve-seat as specified.

2. The combination with the valve-chamber and its hood of a hingedslide-valve, a rock-shaft journaled within the valve-chamber, leverskeyed to the rock-shaft and adapted to bear upon the slide-valve, meansexterior to the valve-chamber for sliding the valve, and means forholding the levers pressed upon the valve as specified.

3. The combination with the valve-chamber and its hood of a hingedslide-valve,ineans for sliding the valve, a rock-shaft Within thevalve-chamber, levers keyed to the rock-shaft and adapted to turn uponthe valve and a spring in connection with the rock-shaft and arranged topress the levers upon the valve as specified.

4. The combination with the valve-chamber and its hood of a hingedslide-valve, means for sliding the valve onto and off its seat, arock-shaft journaled Within the valve-chamber, levers keyed to therock-shaft and adapted to turn upon the valve and a spring connectedwith the rock-shaft outside the valvechamber and adapted to press thelevers upon the valve as specified.

5. The combination with the valve-chamber of a hinged valve and its seatof an induction-pipe for admitting water to the valvechamber over thevalve, a float-valve in connection with the induction-pipe Within thevalve-chamber and a transparent gage cornmunicating with the interior ofthe valvechamber as specified.

JOHN ERWOOD. Witnesses:

ANNIE M. ADAMS, ARTHUR C. DAYTON.

